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annotate Bootloader/flash.c @ 308:ab4515606277

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Fix whitespace Use a consistent standard - Tabs in front for indenting, spaces after for anything else. This way everything stays nice and lined up while also letting users change there prefered indent level. Most of the new files from Haata where already in this format.
author Rowan Decker <Smasher816@gmail.com>
date Sun, 08 Mar 2015 18:40:01 -0700
parents 596d8e300a37
children f4d4cad283c6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Copyright (c) 2011,2012 Simon Schubert <2@0x2c.org>.
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2 * Modifications by Jacob Alexander 2014 <haata@kiibohd.com>
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3 *
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4 * This program is free software: you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation, either version 3 of the License, or
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7 * (at your option) any later version.
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8 *
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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13 *
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14 * You should have received a copy of the GNU General Public License
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15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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16 */
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17
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18 // ----- Local Includes -----
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19
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20 #include "mchck.h"
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21
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22
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23
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24 // ----- Variables -----
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25
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26 uint32_t flash_ALLOW_BRICKABLE_ADDRESSES;
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27
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28
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29
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30 // ----- Functions -----
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31
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32 /* This will have to live in SRAM. */
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33 __attribute__((section(".ramtext.ftfl_submit_cmd"), long_call))
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34 int ftfl_submit_cmd(void)
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35 {
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36 FTFL.fstat.raw = ((struct FTFL_FSTAT_t){
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37 .ccif = 1,
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38 .rdcolerr = 1,
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39 .accerr = 1,
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40 .fpviol = 1
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41 }).raw;
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42 struct FTFL_FSTAT_t stat;
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43 while (!(stat = FTFL.fstat).ccif)
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44 /* NOTHING */; /* XXX maybe WFI? */
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45 return (!!stat.mgstat0);
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46 }
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47
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48 int flash_prepare_flashing(void)
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49 {
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50 /* switch to FlexRAM */
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51 if (!FTFL.fcnfg.ramrdy) {
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52 FTFL.fccob.set_flexram.fcmd = FTFL_FCMD_SET_FLEXRAM;
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53 FTFL.fccob.set_flexram.flexram_function = FTFL_FLEXRAM_RAM;
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54 return (ftfl_submit_cmd());
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55 }
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56 return (0);
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57 }
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58
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59 int flash_erase_sector(uintptr_t addr)
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60 {
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61 if (addr < (uintptr_t)&_app_rom &&
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62 flash_ALLOW_BRICKABLE_ADDRESSES != 0x00023420)
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63 return (-1);
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64 FTFL.fccob.erase.fcmd = FTFL_FCMD_ERASE_SECTOR;
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65 FTFL.fccob.erase.addr = addr;
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66 return (ftfl_submit_cmd());
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67 }
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68
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69 int flash_program_section(uintptr_t addr, size_t num_words)
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70 {
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71 FTFL.fccob.program_section.fcmd = FTFL_FCMD_PROGRAM_SECTION;
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72 FTFL.fccob.program_section.addr = addr;
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73 FTFL.fccob.program_section.num_words = num_words;
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74 return (ftfl_submit_cmd());
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75 }
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76
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77 int flash_program_sector(uintptr_t addr, size_t len)
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78 {
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79 return (len != FLASH_SECTOR_SIZE ||
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80 (addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
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81 flash_erase_sector(addr) ||
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82 flash_program_section(addr, FLASH_SECTOR_SIZE/4));
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83 }
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84
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85 void *flash_get_staging_area(uintptr_t addr, size_t len)
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86 {
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87 if ((addr & (FLASH_SECTOR_SIZE - 1)) != 0 ||
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88 len != FLASH_SECTOR_SIZE)
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89 return (NULL);
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90 return (FlexRAM);
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91 }
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92